Build failed. https://zuul.opendev.org/t/openstack/buildset/ec2c4288d75d461696640299427124e5 - openstack-tox-docs https://zuul.opendev.org/t/openstack/build/af716902b7bb41a5ba336436c9a1bb70 : SUCCESS in 4m 31s - openstack-tox-py27 https://zuul.opendev.org/t/openstack/build/8c1ca6e1be9c45b18de1c4553e43de73 : SUCCESS in 4m 52s - openstack-tox-py36 https://zuul.opendev.org/t/openstack/build/3ade91875691490bb2818bc6f2a2c2cd : SUCCESS in 4m 47s - openstack-tox-py37 https://zuul.opendev.org/t/openstack/build/226c8feb6e784cfb8f29ea5f4880ca17 : FAILURE in 4m 39s